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W1 E. HALR LOOK..

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:et tort-h, whereby certain releasing operations must be performed before the locking bolt can be released Jfrom a retaining device by rotation of the key and'in so constructing the lock that one must understand the combination, as vvell as the manz ner ot operation, before the locking bolt is released, thus rendering it impossible .for unauthorized persons operating the lock.

lurther objects of the invention are to provide a lock which is comparatively simple in its construction and arrangement, strong,I durable eilicient and convenient in and. eomparatively inexpensive to manur- J. pu l Vith theoregoing and other objects in vieu the invention consists of. the .novel constructiom combination and arrangement of partsas'hereinaiter more specically de! scribed and illustrated in the accom anying drawing wherein is Shown an em odi. ment oi" the invention., but it is to be understood that changes,l variations and inediti.- cations can be resorted to' which come Within scope et the claims hereunto appended. the drawingsil wherein like numerals of reference denote corresponding parte bolt, and rig. 5 is a longitudinal sectional v'eiv of the lock.

Referring to the drawing 'in detail 1 denotes a rectangular casing having its outer end 'Wall formed with a slot 2 and provided throughout the several vievvsc-Figure 1 1s.

` members in engagement with the locking.

i recate.

with a spring 3, the latter being secured to the said outer end Wall by a rivet 4:. 'lfhe front Wall of the casing 1 Which is indicated by the reference character 5 is formed with an' opening 6 into which ex.- tends an annular flange 7 carried by a cir' I cular revoluble disk 8 arranged against the outerhta'ce of the Wall 5 and provided with z a pair of outwardly projecting annular danges 9, 10. Surrounding the disk 8 and lined toi the outer tace of the front wall 5 a circular plate 11 rovided with graduatrons 12. The dange is interiorly threaded and engaging with the threads of the ilange and projecting inwardly fromA the :dange' 7 isla bearing sleeve 13. The ange 9 is provided with graduations, as at lt.

Arranged Within the casing l and con-- nected to the ange 7, as well as being roi tatable upon the inner face of the. front Wall 5 is a barrel 15 having its inner edge formed `with a notch or sea-t 16. The barrel is shouldered in its periphery to provide in gconnectionl with the trout wall 5 a pocket 217 into which extends a rib 18 projecting ltrom the' inner tace et a'barrel 19, which surrounds the barrel 15 and'vvhich normally is stationary.y The barrel 19 is provided in its inner edge' With a seat 20. The seat 16' `jie adapted to' aline With the seat 20 for' a purpose which will be presently referred to: 'llhe barrel 19 has its periphery formed 1with a lll-shaped lug 21 which is adapted to engagea pin 22 carried by the' Wall 5 whereby the movement of the barrel 19 is limited in one' direction. rll`he lug 21 is also adapted to engagea pin 23, spaced from the pin 22, carried by the vvall 5.L 'llhe pin 23 limits the movement ot the barrel 19 in the opposite direction. Arranged Within the casing 1 and in proximity to the inner edges of the barrels 15, 19,- is apartition or supporting plate 211, formed with a slot 25 and an opening 26. Pivotally mounted upon the plate 24 .in proximity to the slot 25, through the medium of the pin 27 is a stop member 28, pro- ;vided With a notch 29 adapted to normally register With the seat 20. The member 28, at one Wall of the notch 29 is provided With a beveled lug and is furthermore provided at the opposite side of the notch 29 With a beveled lug 31. Engaging With a pin 32 carried by the member 28 is a spring 33 which is lined7 as at rlhe function of roo the spring 33 is to maintain the member 28 in such position, whereby the notch 29 will register with the seat 20, as shown in Figs. 2 and 3. The member 28 has its movement arrested in one direction, by a pin 35 which engages a shoulder 36. The pin 35 arrests the movement of the member 28 against the action of the spring 33;

The sleeve 13 has its inner end bifurcated as at 37 and mounted in said sleeve 13, is what may be termed a rotatable key having a shank formed of two different diameters, the larger indicated at 38 and the smaller at 39. The inner end of thel shank is pro- `vided with what may be termed a ward 40 and with a lug 41 which is arranged diametrically opposite the ward 40. The portion 38 of larger diameter of the shank of the key is mounted in the sleeve 13, and is capable of being rotated in said sleeve as well as'being longitudinally shiftable. The portion 38 of larger diameter is provided with a pair of oppositely disposed laterally extending projections 42- which extend through the furcations at the inner end of the sleeve 13 and are adapted to engage a coiled compression sprin 43 which is mounted upon the Hange and surrounds the sleeve 13. The function of the'spring 43 is to normally maintain the ward 40 and lug 41 of the key clear of the plate 24. The reduced portion 39 of smaller diameter of the shank projects beyond the disk 8 and is' provided with a finger piece 44 having an annular flange 45 which is normally surrounded by the flange 9 and provided with an indicating line 46.

The flange 10 is provided with an indicating line 47. The line 46 associates with the graduations 14 and the' line 47 associates with the raduations 12.

Pivot upon a pin 48 is a pair of oppositel disposed latch members 49, 50. Each of t e members 49, 50 is provided with an inwardly extending nose 51, which is adapted to engage with a locking bolt 52 extended through the slot 2 and carried by a strike plate 53, gaged by the latch members 49, 50 bears against the spring 3. When the bolt 52 is released from the latch members, the spring 3 forces the strike plate away from the casing, under such conditions the locking bolt 52-is carried therewith, so that the noses 51 of thelatch members can not engage the bolt to hold it until the strike plate 53is shifted toward the casing, to 'position the locking bolt 52 to be engaged by the latch members 49, 50. The latch members 49, 50 are maintained in operative position, that is the position which they assume to engage the lockinw- 1 .bythe endsof a spring 54, the said e ring` against the latch members '49, 50 as -elearilygshown in Fig. 4. The

spring 54 is secured vto the posts 55. The

the latter when the bolt 52 is en latch members 49, 50 are opened, against the action of the spring 54 by a wedgedshaped releasing member 56, which is pivoted upon a pin 57. One end of the member 56 is cut away, as at 58 for engagement by the lug` 70 21, whereby when the barrel 19 1s rotated the lug 21 will engage the cut away portion 58 and rotate the member 56 upon its pivot 57 and as said member is rotated the ends of the members 49, 50 are shifted away from each other, under such circumstances the noses 51 are swung clear of, the head of the bolt 52. The movement of the lug 21 when rotating the member 56 is arrested by the pin 23.

The operation of the lock is as follows It will be assumed that the barrel 19 is in the position as shown in Fig. 3, wit-h the seat 20 registering with the notch .29. The key is turned until the ward 40 engages the lug 30. At this point the key is pressed inwardly so as to clear-the lug 30, after which it is positioned in the notch 29 between the lugs 30 and 31. The disk 8 is then turned to position the barrel 15 with its seat 16 in alinement with the seat 20. Thekey is then pulled outwardly against the action of the spring 43 and the ward 40 is positioned in the seats 16 and 20 and the lug 41 in one of the furcations 37, the ward 40 also extends in one of the furcations 37. The key is then turned and the barrels 15 and 19 rotated, the rotating of the barrels causing the lug 21 to engage the member 56"'rot'ate it and actuate the members 49, 50 to release the locking bolt. When the key is released the spring 43 forces the ward 40 and the lug 41 clear of the plate 24 and the spring 54 returns the members 49, 50 to their normal position as shown in Fig. 4. Unless one is familiar with the positioning of the key when it strikes the lug 30 of the lstop member 28 the member will be rotated on its pivot so that the ward will clear the member 28 and the key completely rotated.

1. A lock comprising a locking bolt, a pair ofV latch members engaging with the bolt for locking it, a releasable member for and interposed between saidlatch members, a normal y stationary barrel provided with a lug for actuating said releasing member when the barrel is rotated, a rotatable barrel, and a longitudinally shiftable and rotatable keyprovided with means for rotating said barrels simultaneously to operate the releasing member.

2. A lock comprisin of spring controlled pivoted latch-members engagingV with the bolt for locking it, a releasable means for and interposed between said latch members, a pair ofrotatable barrels each provided with a seat, said seats normally out of alinement and adapted to aline when one of the barrels ismrotated relaa lock bolt, a pairA tively to the other, one of said barrels provided With means for operating the releasing member, and a longitudinally shiftable and rotatable key provided with means adapted to engage in the registering seats for rotating said barrels simultaneously thereby causing the operation of the releasing member to free the bolt of the latch members.

3. A lock comprising a lock bolt, a pair of spring controlled pivoted latch members enable means for and interposed between said gaging With the bolt for locking it, a releaslatch members, a pair of rotatable barrels each provided With a seat, said seats. normally out of alinement and adapted to aline when one of the barrels is rotated relatively to the other, one of said barrels provided with means for operating the releasing member, a longitudinally shiftable and rotatable key provided with means adapted to engage in the registering seats for rot-ating said barrels simultaneously thereby causing the operation of the releasing member to free the bolt of the latch members, and a spring controlled stop member constituting a positioning device for the means carried b said element.

In testimony whereof I affix my signature in the presence of two Witnesses.

WILLIAM HENRY HALE.

Witnesses:

MAX H. SRoLoviTz, HENRY C. EVERT. 

